Astrophysics and Space Science

, Volume 34, Issue 1, pp 185–189 | Cite as

The plausibility of silicate-core ice-mantle grains

  • M. J. Dempsey
  • N. C. Wickramasinghe


Extinction curves for silicate-core ice-mantle grains are computed and compared with the infrared spectral data on the BN object in the Orion nebula. A ratio of outer mantle to core radius of 1.3 which best fits this data suggests that silicate-core ice-mantle grains are unlikely to contribute a major part to the total visual extinction coefficient of interstellar material.


Spectral Data Extinction Coefficient Major Part Core Radius Extinction Curve 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© D. Reidel Publishing Company 1975

Authors and Affiliations

  • M. J. Dempsey
    • 1
  • N. C. Wickramasinghe
    • 1
  1. 1.Dept. of Applied Mathematics and AstronomyUniversity CollegeCardiffWales

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